- The NLC will be closed for the following holidays:
| Holiday | 2018-2019 | 2019-2020 | 2020-2021 |
| TEACHER WORK DAY | Friday, August 17 | TBA (Last Friday before Loudoun County Public Schools start) | TBA (Last Friday before Loudoun County Public Schools start) |
| Labor Day | Monday, September 3 | Monday, September 2 | Monday, September 7 |
| Columbus Day | Monday, October 8 | Monday, October 14 | Monday, October 12 |
| Thanksgiving Day | Thursday, November 22 | Thursday, November 28 | Thursday, November 26 |
| Day After Thanksgiving | Friday, November 23 | Friday, November 29 | Friday, November 27 |
| Christmas Eve (Observed) | Monday, December 24, NLC CLOSED | Tuesday, December 24, NLC Closes at 2 pm | Thursday, December 24, NLC Closes at 2 pm |
| Christmas Day | Tuesday, December 25 | Wednesday, December 25 | Friday, December 25 |
| New Year’s Day | Tuesday, January 1 | Wednesday, January 1 | Friday, January 1 |
| Martin Luther King, Jr Day | Monday, January 21 | Monday, January 20 | Monday, January 18 |
| President’s Day | Monday, February 18 | Monday, February 17 | Monday, February 15 |
| Good Friday | Friday, April 19 | Friday, April 10 | Friday, April 2 |
| Memorial Day | Monday, May 27 | Monday, May 25 | Monday, May 31 |
| July 4th (Observed) | Thursday, July 4 | Friday, July 3 | Monday, July 5 |
*** Once the Loudoun County School calendar is published for these school years the dates for these Teacher Work Days will be announced. They will be held the Friday prior to the first day of school.